EXACTLY SOLUBLE SUPERSYMMETRIC T-J-TYPE MODEL WITH LONG-RANGE EXCHANGE AND TRANSFER

被引：84

作者：

KURAMOTO, Y

YOKOYAMA, H

机构：

[1] Department of Applied Physics, Tohoku University

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.67.1338

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Gutzwiller wave function is shown to be the exact solution of a supersymmetric t-J-type model. The model realizes a Fermi-liquid state in one dimension with a discontinuity in the momentum distribution. Analytic results are obtained for spin and charge susceptibilities, and the specific-heat coefficient with the help of the Luttinger-liquid theory. In the high-density limit the model exhibits a Mott-Hubbard gap and reduces to an antiferromagnetic spin chain with long-range exchange solved by Haldane and Shastry.

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页码：1338 / 1341

页数：4

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